Logic Doesn't Apply To The Real World.

One Can Acquire Certainty Only By Amputating Inquiry.

This Is A Tricky Domain Because, Unlike Simple Arithmetic, To Solve A Calculus Problem - And In Particular To Perform Integration - You Have To Be Smart About Which Integration Technique Should Be Used: Integration By Partial Fractions, Integration By Parts, And So On.

There Was A Failure To Recognize The Deep Problems In Ai; For Instance, Those Captured In Blocks World. The People Building Physical Robots Learned Nothing.

We Rarely Recognize How Wonderful It Is That A Person Can Traverse An Entire Lifetime Without Making A Single Really Serious Mistake — Like Putting A Fork In One's Eye Or Using A Window Instead Of A Door.

Good Theories Of The Mind Must Span At Least Three Different Scales Of Time: Slow, For The Billions Of Years In Which Our Brains Have Survivied; Fast, For The Fleeting Weeks And Months Of Childhood; And In Between, The Centuries Of Growth Of Our Ideas Through History.